diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 31fa08e..33b2e32 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -2328,9 +2328,12 @@ arm_gen_constant (enum rtx_code code, enum machine_mode mode, rtx cond, immediate value easier to load. */ enum rtx_code -arm_canonicalize_comparison (enum rtx_code code, rtx * op1) +arm_canonicalize_comparison (enum rtx_code code, enum machine_mode mode, + rtx * op1) { unsigned HOST_WIDE_INT i = INTVAL (*op1); + unsigned HOST_WIDE_INT maxval; + maxval = (((unsigned HOST_WIDE_INT) 1) << (GET_MODE_BITSIZE(mode) - 1)) - 1; switch (code) { @@ -2340,7 +2343,7 @@ arm_canonicalize_comparison (enum rtx_code code, rtx * op1) case GT: case LE: - if (i != ((((unsigned HOST_WIDE_INT) 1) << (HOST_BITS_PER_WIDE_INT - 1)) - 1) + if (i != maxval && (const_ok_for_arm (i + 1) || const_ok_for_arm (-(i + 1)))) { *op1 = GEN_INT (i + 1); @@ -2350,7 +2353,7 @@ arm_canonicalize_comparison (enum rtx_code code, rtx * op1) case GE: case LT: - if (i != (((unsigned HOST_WIDE_INT) 1) << (HOST_BITS_PER_WIDE_INT - 1)) + if (i != ~maxval && (const_ok_for_arm (i - 1) || const_ok_for_arm (-(i - 1)))) { *op1 = GEN_INT (i - 1); |